Zigglzworth Zigglzworth - 4 months ago 16
iOS Question

iOS - UICollectionView spacing still there when set to 0 - How to set with no spacing between cells

I have a simple UICollectionView which I have set with 0 spacing in InterfaceBuilder but when I populate the collection view with cells there is still some spacing. Is there something special and not immediately obvious that I need to do in order to actually see a collectionview cell with 0 spacing beyond setting it to have 0 spacing? Thanks.

EDIT* some code:

- (UICollectionViewCell *)collectionView:(UICollectionView *)cv cellForItemAtIndexPath:(NSIndexPath *)indexPath {

UICollectionViewCell *cell = [cv dequeueReusableCellWithReuseIdentifier:@"Cell" forIndexPath:indexPath];


cell.backgroundColor = [UIColor clearColor];

UILabel *lbl = [[UILabel alloc] initWithFrame:CGRectMake(2, 2, cell.frame.size.width -4, cell.frame.size.height -4)];
lbl.backgroundColor = [UIColor clearColor];
lbl.font = [UIFont boldSystemFontOfSize:20];
lbl.text = [NSString stringWithFormat:@"$%0.0f", [[amountsArray objectAtIndex:indexPath.row] floatValue]];
lbl.textAlignment = NSTextAlignmentCenter;
lbl.layer.borderWidth = 1;


[cell addSubview:lbl];
[lbl release];


return cell;
}


enter image description here

Answer

I solved this issue and got the layout I desired with the following:

- (UICollectionViewCell *)collectionView:(UICollectionView *)cv cellForItemAtIndexPath:(NSIndexPath *)indexPath {

UICollectionViewCell *cell = [cv dequeueReusableCellWithReuseIdentifier:@"Cell" forIndexPath:indexPath];



    cell.backgroundColor = [UIColor clearColor];

    //clear any contents on the cell
    for (UIView *subView in [cell subviews]) {
    [subView removeFromSuperview];
    }


    //Label to put on the cell
    UILabel *lbl = [[UILabel alloc] initWithFrame:CGRectMake(2, 2, cell.frame.size.width -4, cell.frame.size.height -4)];
    lbl.backgroundColor = [UIColor clearColor];
    lbl.textColor = [UIColor colorWithRed:[CPExtras RGBtoPercent:70] green:[CPExtras RGBtoPercent:92] blue:[CPExtras RGBtoPercent:105] alpha:1];
    lbl.font = [UIFont boldSystemFontOfSize:20];
    lbl.text = @"100";
    lbl.textAlignment = NSTextAlignmentCenter;

    //Give the cell a border
    cell.layer.borderColor = [[UIColor colorWithRed:[CPExtras RGBtoPercent:70] green:[CPExtras RGBtoPercent:92] blue:[CPExtras RGBtoPercent:105] alpha:0.5] CGColor];
    cell.layer.borderWidth = 0.5;


    [cell addSubview:lbl];

    [lbl release];





return cell;
}

In IB I had these measurement settings for the collectionview:

Collection View size

Collection view flow layout size

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